/*
 * Copyright 2012-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.assertj.core.internal;

import static org.assertj.core.api.Assertions.assertThat;

import java.time.LocalDateTime;
import java.time.chrono.ChronoLocalDateTime;
import java.time.chrono.JapaneseDate;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

class ChronoLocalDateTimeComparatorTest {

  private ChronoLocalDateTimeComparator comparator;

  @BeforeEach
  void setUp() {
    comparator = ChronoLocalDateTimeComparator.getInstance();
  }

  @Test
  void should_have_one_instance() {
    assertThat(comparator).isSameAs(ChronoLocalDateTimeComparator.getInstance());
  }

  @Test
  void should_have_description() {
    assertThat(comparator.description()).isEqualTo("ChronoLocalDateTime.timeLineOrder()");
  }

  @Test
  void should_disregard_chronology_difference() {
    // GIVEN
    LocalDateTime now = LocalDateTime.now();
    JapaneseDate japaneseDate = JapaneseDate.from(now);
    ChronoLocalDateTime<JapaneseDate> nowInJapanese = japaneseDate.atTime(now.toLocalTime());
    // THEN
    assertThat(now.compareTo(nowInJapanese)).as("Built-in comparison should report that they differ").isNotZero();
    assertThat(comparator.compare(now, nowInJapanese)).isZero();
    assertThat(comparator.compare(now, now)).isZero();
  }
}
